How can I extract steady state information of a given system response?

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Reyhane Mokhtarname 2020-9-13

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https://ww2.mathworks.cn/matlabcentral/answers/592891-how-can-i-extract-steady-state-information-of-a-given-system-response

评论： Reyhane Mokhtarname 2020-9-13

Dear Matlab users

I have collected some faulty data of a polymerization palnt. I need to extract only steady state information. In other words I want to remove the transient behaviour. Is there any funcyion which can do this for me?

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Ameer Hamza 2020-9-13

Can you share the data or its plot? It will show what type of transients are present.

Reyhane Mokhtarname 2020-9-13

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Dear Ameer Hamza

actually I want to use the data as training samples for fault detection algorithm. I have 12 process variables which are projrcted in to principle component and residual subspaces. Number of PCs in my case is 3. The steady state data are under the ellipsoid. I want to remove data points above the ellipsoid.